| Round Rock to Brownhills | 4,796.18 mi (7,718.70 km) |
| Round Rock to Broxbourne | 4,895.56 mi (7,878.64 km) |
| Round Rock to Broxburn | 4,651.74 mi (7,486.24 km) |
| Round Rock to Bryn | 4,745.28 mi (7,636.79 km) |
| Round Rock to Buckhurst Hill | 4,901.27 mi (7,887.83 km) |
| Round Rock to Buckie | 4,625.95 mi (7,444.75 km) |
| Round Rock to Buckingham | 4,851.10 mi (7,807.10 km) |
| Round Rock to Buckley | 4,737.72 mi (7,624.63 km) |
| Round Rock to Bucksburn | 4,665.93 mi (7,509.08 km) |
| Round Rock to Bude | 4,742.99 mi (7,633.11 km) |
| Round Rock to Bulwell | 4,814.35 mi (7,747.95 km) |
| Round Rock to Burbage | 4,821.95 mi (7,760.19 km) |
| Round Rock to Burgess Hill | 4,915.11 mi (7,910.10 km) |
| Round Rock to Burnham | 4,876.94 mi (7,848.68 km) |
| Round Rock to Burnham-on-Sea | 4,793.76 mi (7,714.80 km) |
